49633928640 has 168 divisors, whose sum is σ = 170848782000. Its totient is φ = 13225734144.

The previous prime is 49633928611. The next prime is 49633928657. The reversal of 49633928640 is 4682933694.

49633928640 is a `hidden beast` number, since 496 + 3 + 3 + 92 + 8 + 64 + 0 = 666.

It is a super-2 number, since 2×49633928640² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4311372 + ... + 4322868.

Almost surely, 2^49633928640 is an apocalyptic number.

49633928640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49633928640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85424391000).

49633928640 is an abundant number, since it is smaller than the sum of its proper divisors (121214853360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49633928640 is a wasteful number, since it uses less digits than its factorization.

49633928640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019 (or 13006 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 49633928640 in words is "forty-nine billion, six hundred thirty-three million, nine hundred twenty-eight thousand, six hundred forty".